diff --git a/Android-1/Lesson-1/HelloActivity/app/src/main/res/layout/activity_hello.xml b/Android-1/Lesson-1/HelloActivity/app/src/main/res/layout/activity_hello.xml
index b028a5c..d273d61 100644
--- a/Android-1/Lesson-1/HelloActivity/app/src/main/res/layout/activity_hello.xml
+++ b/Android-1/Lesson-1/HelloActivity/app/src/main/res/layout/activity_hello.xml
@@ -1,3 +1,4 @@
+//xml layout for helloactivity
 <?xml version="1.0" encoding="utf-8"?>
 <android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"